한국세라믹학회지 (Journal of the Korean Ceramic Society)

  • 제32권9호
  • /
  • Pages.1076-1084
  • /
  • 1995
  • /
  • 1229-7801(pISSN)
  • /
  • 2234-0491(eISSN)
한국세라믹학회 (The Korean Ceramic Society)
권호 표지

Aluminum Isopropoxide와 Sodium Hydroxide로부터 $\beta$-Alumina의 합성과 결정화 과정 및 전도도

Synthesis, Crystallization Behaviors and Conductivity of $\beta$-Alumina from Aluminum Isopropoxide and Sodium Hydroxide

  • 양유철 (부산대학교 공과대학 무기재료공학과) ;
  • 박용민 (부산대학교 공과대학 무기재료공학과) ;
  • 김형욱 (부산대학교 공과대학 무기재료공학과) ;
  • 손영국 (부산대학교 공과대학 무기재료공학과)
  • 발행 : 1995.09.01
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초록

A mixture of aluminum isopropoxide (Al(OC3H7i)3) solution and sodium hydroxide (NaOH) solution was hydrolyzed in the range between pH 1~14. the powder obtained from sol-gel process was calcined at several temperatures and crystallization behaviors of various samples were investigated. The hydrolyzed sols of pH 1~6 wre clear, or near clear. On the other hand, powder precipitated from sols of pH 7~14. The sample obtained from pH 3 solution crystallized via complicated route, and $\beta$-Al2O3 and $\beta$"-Al2O3 phases appeared at lower temperature than samples from other pH conditions. And the quantity of remained $\beta$"-Al2O3 phase after heat treatment at 150$0^{\circ}C$ was more than samples from other pH conditions. After sintering, ionic conductivities were 1.3$\times$10-4S.cm-1 to 0.76$\times$10-4S.cm-1.0-4S.cm-1.

키워드

참고문헌

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